Top Emergency HVAC Services in Saint Louis, MO,  63101  | Compare & Call

Saint Louis HVAC Company

Saint Louis HVAC Company

Saint Louis, MO
Emergency HVAC Services

Phone : (888) 996-4787

Saint Louis HVAC Company provides heating and cooling service for homes and small businesses in Saint Louis, Missouri. The team handles repairs, system checks, and replacements with a focus on safety, comfort, and clear pricing.
FEATURED
Tri-State Mechanical Services

Tri-State Mechanical Services

★★★★☆ 3.9 / 5 (10)
2338 N Lindbergh Blvd, Saint Louis MO 63114
Heating & Air Conditioning/HVAC

Since 1989, Tri-State Mechanical Services has been a trusted HVAC contractor for Saint Louis, MO. They offer 24/7 emergency repair, installation, and maintenance for heating and cooling systems. Their skilled technicians handle both residential and commercial projects, providing reliable service you can count on.

Jersey Heating and Cooling

Jersey Heating and Cooling

★★★★★ 5.0 / 5 (2)
Saint Louis MO 63110
Heating & Air Conditioning/HVAC, Water Heater Installation/Repair

Jersey Heating and Cooling is a trusted HVAC company in Saint Louis, MO, offering reliable 24/7 emergency service for heating, AC, and water heater repair. Their certified technicians provide expert installation, maintenance, and system replacements to keep your home comfortable throughout the year.

Efficient Heating And Cooling

Efficient Heating And Cooling

Saint Louis MO 63121
Heating & Air Conditioning/HVAC

With over 15 years in residential HVAC, Efficient Heating And Cooling is a trusted Saint Louis, MO family business. They provide expert installation, replacement, and repair for all brands. Their 24-hour emergency service and preventative maintenance plans offer reliable comfort for homes across the metro area.

Cherry Tree Heating & Air Conditioning

Cherry Tree Heating & Air Conditioning

★★★★★ 5.0 / 5 (1)
Saint Louis MO 63125
Heating & Air Conditioning/HVAC

Cherry Tree Heating & Air Conditioning is a trusted HVAC provider in Saint Louis, MO, with 70 years of combined experience. They offer skilled installation, repair, and maintenance, backed by reliable 24/7 emergency service. This locally owned company is known for straightforward, quality heating and cooling solutions for your home or business.

Xcell Williams Heating & Cooling

Xcell Williams Heating & Cooling

★★★★☆ 4.2 / 5 (5)
3901 Shirley Ave, Saint Louis MO 63121
Heating & Air Conditioning/HVAC

Xcell Williams Heating & Cooling is a trusted HVAC company serving Saint Louis, MO. They provide expert HVAC installation, replacement, and repair services. Available 24/7 for emergencies, this established provider focuses on reliable heating and cooling solutions for local homes and businesses, using quality Goodman products and offering helpful financing.

Optimal Heating and Cooling

Optimal Heating and Cooling

Saint Louis MO 63376
Heating & Air Conditioning/HVAC

Since 1990, Optimal Heating and Cooling has provided reliable HVAC service in Saint Louis, MO. Their certified technicians handle air conditioning installation, repair, and advanced duct cleaning for homes and businesses in O'Fallon, Saint Peters, and Cottleville. As a trusted local company, they are known for dependable maintenance and high-efficiency solutions.

Pryme Tyme

Pryme Tyme

Saint Louis MO 63376
Heating & Air Conditioning/HVAC

Pryme Tyme is a trusted HVAC contractor serving Saint Louis, MO, and nearby areas. Their skilled team provides reliable heating and air conditioning service and repair, including emergency support. Homeowners in O'Fallon, Saint Peters, and Cottleville count on them for dependable solutions.

MKTM Contracting

MKTM Contracting

Saint Louis MO 63125
Heating & Air Conditioning/HVAC, Plumbing, Water Heater Installation/Repair

For reliable Saint Louis HVAC and plumbing, MKTM Contracting provides skilled service. Their certified technicians handle heating, cooling, water heater, and pipe repairs for your home. They are a trusted local resource for installation and maintenance, serving the wider metro area with consistent quality.

Cramer Services

Cramer Services

Saint Louis MO 63112
Heating & Air Conditioning/HVAC, Plumbing, Electricians

Cramer Services is a trusted HVAC, plumbing, and electrical contractor serving Saint Louis, MO. Their skilled team handles everything from HVAC system repair and drain installation to electrical inspections. They offer reliable emergency service for urgent home issues, providing professional solutions with clear communication and dependable warranties for local homeowners.

Seliga Heating & Cooling

Seliga Heating & Cooling

★★★★☆ 4.0 / 5 (24)
6211 Gravois Ave, Saint Louis MO 63116
Heating & Air Conditioning/HVAC, Water Heater Installation/Repair

With over 90 years of service in Saint Louis, MO, Seliga Heating & Cooling is a trusted, fourth-generation family business. Their skilled technicians handle HVAC installation, repair, and maintenance, along with water heater services. As a licensed and bonded company, they provide reliable solutions for both homes and businesses, supported by NATE-certified expertise and a commitment to customer satisfaction.



HVAC Service in Saint Louis, MO: Your Local Guide for Year-Round Comfort

Living in Saint Louis means facing the full range of Midwestern weather. One day it’s a humid, 95-degree summer scorcher, and the next, a polar vortex can send temperatures plunging below freezing. When your home's comfort system fails during these extremes, you need help fast. This guide is for Saint Louis homeowners looking to understand HVAC service, from routine maintenance to emergency repairs. Whether you’re in the historic brick homes of Soulard, a newer subdivision in Chesterfield, or a condo downtown, we’ll cover what you need to know about reliable HVAC service in Saint Louis, MO.

What Does Full HVAC Service Mean for Saint Louis Homes?

HVAC service isn’t just fixing something when it breaks. It’s a full spectrum of care for your heating, ventilation, and air conditioning system. For Saint Louis residents, this typically includes seasonal tune-ups in the spring and fall, same-day repairs for sudden problems, and 24/7 emergency response for true crises. Think of it like taking care of your car: regular oil changes prevent major engine failure. A professional HVAC service visit might involve cleaning coils, checking refrigerant levels, testing safety controls on your furnace, and ensuring everything runs efficiently to handle our sticky summers and cold winters.

What Qualifies as a Real HVAC Emergency?

Not every HVAC problem requires a midnight service call. A true emergency is about safety and preventing major damage. In Saint Louis, we consider these situations emergencies:

  • No Heat During Freezing Weather: If your furnace quits when it's 20 degrees out, especially with children or elderly family members at home.
  • AC Failure During a Heatwave: When the heat index is over 100°F and your AC stops cooling.
  • Gas Smells or Suspected Carbon Monoxide: Any odor of natural gas or if your CO alarm is sounding.
  • Electrical Burning Smells or Smoke: Coming from your furnace, air handler, or thermostat.
  • Major Water Leaks from Your AC: A clogged condensate line can cause water to pour from your indoor unit, risking ceiling and floor damage.

If you experience any of these, it’s time to call for emergency HVAC service immediately.

How Saint Louis Climate and Housing Challenge Your System

Our unique climate puts extra stress on HVAC equipment. The high summer humidity makes ACs work harder, often leading to frozen coils. Winter ice storms and salt air from treated roads can corrode outdoor units. Older homes in neighborhoods like The Hill or Lafayette Square might have aging gas furnaces or boiler systems that need careful maintenance, while newer homes in Ballwin or St. Charles often use high-efficiency heat pumps. From central AC and gas furnaces to ductless mini-splits in home additions, knowing your system type helps when you need service.

Common HVAC Problems We See in Saint Louis

Homeowners across the region often call us for similar issues. In the summer, we get many calls for ACs that aren’t cooling, often due to a failed capacitor or a refrigerant leak. Just last July, a family in Kirkwood had their AC freeze solid during a humid spell because of a dirty air filter. In the winter, furnaces that won’t ignite are common, frequently caused by a dirty flame sensor or a faulty igniter. Another frequent issue is the AC leaking water inside the house, which usually points to a clogged condensate drain line—a quick fix if caught early, but it can cause water damage in a basement or crawlspace.

Emergency, Same-Day, or Routine Service: Knowing the Difference

Understanding when to call for what type of HVAC service is key. If your AC is blowing slightly warm air on a mild 80-degree day, a same-day or next-business-day appointment is usually fine. This is standard HVAC repair. If that same failure happens during a dangerous heat advisory, it becomes an emergency. For routine needs like an annual furnace check-up or replacing a thermostat, scheduling during regular business hours is perfect. The goal is to match the urgency of the service to the situation, ensuring safety and comfort without unnecessary emergency fees when possible.

A Transparent Look at HVAC Service Costs in Saint Louis

We believe in clear, upfront pricing. Most HVAC service calls start with a diagnostic fee, typically between $80 and $120, to pinpoint the problem. For emergency service after hours, on weekends, or holidays, there is an additional emergency call-out fee, which can range from $100 to $200. Labor rates for emergency times are often 1.5 to 2 times the standard rate. Parts are priced separately. For example, a common repair like replacing a furnace igniter on a weekday might cost $250-$400 total. An emergency capacitor replacement for an AC on a Sunday afternoon in July might range from $400-$600. These are estimates, and your final cost depends on the specific repair and parts needed.

Signs You Need Immediate HVAC Service

  • No heat during freezing Saint Louis winter weather.
  • Carbon monoxide alarm is beeping or has activated.
  • You smell a strong odor of natural gas near the furnace.
  • Seeing smoke or smelling burning from HVAC equipment.
  • Water is pooling from your indoor air handler or AC unit.
  • Loud banging, screeching, or buzzing noises from the system.
  • Complete AC failure during a period of dangerous heat.

Safety Checklist While Waiting for Help

  • If you smell gas, evacuate the home immediately and call the gas company from outside.
  • If the CO alarm sounds, get everyone outside into fresh air and call 911.
  • If it is safe to do so, turn off the HVAC system at the thermostat and the circuit breaker.
  • Keep children and pets away from the malfunctioning equipment.
  • Move elderly family members or anyone with health concerns to a safe, temperate location if possible.

Remember: Never attempt to repair gas lines or high-voltage electrical components yourself.

Local Codes and Why Professional Service Matters

In Saint Louis and across Missouri, HVAC work must comply with specific codes. This includes proper furnace venting to prevent carbon monoxide hazards and EPA Section 608 certification for handling refrigerants. Major installations like a new furnace or AC often require a permit from the city or county. Using a licensed, insured HVAC service provider ensures the work is done safely, correctly, and up to code, protecting your home and your family.

What to Expect for Response Times in the Saint Louis Area

When you call for emergency HVAC service in Saint Louis, our goal is to have a technician on the road quickly. Typical response times can range from 60 to 180 minutes, depending on traffic, severe weather conditions, and your specific location relative to our dispatchers. We navigate the metro area, from I-64 to I-70 and I-270, to reach you as safely and swiftly as possible.

Your Trusted Partner for Saint Louis HVAC Service

From routine maintenance to urgent repairs, having a reliable local expert makes all the difference for your home’s comfort and safety. We’ve covered what HVAC service in Saint Louis, MO entails, how to handle emergencies, and what to expect. Your comfort is our priority, no matter the season.

Saint Louis Emergency HVAC provides trusted HVAC service in Saint Louis, MO, including 24/7 emergency response and same-day repairs. Call (888) 996-4787 now for immediate dispatch.





Scroll to Top
CALL US NOW